/Engine/Plugins/Runtime/MassGameplay/Source/MassLOD/Public/MassLODSubsystem.h
Deprecated* AddViewer has been deprecated. Use AddPlayerViewer or AddStreamingSourceViewer instead
void AddViewer ( [APlayerController](API\Runtime\Engine\GameFramework\APlayerController) * PlayerController, [FName](API\Runtime\Core\UObject\FName) StreamingSourceName )